Machine for manufacturing paper bags and the like.



B. J. JENSEN. MACHINE FOR MANUFAGTURING PAPER BAGS AND THE LIKE.APPLIOATION FILED AUG.4,1906.

926,422. Patented June 29, 1909.

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B. J. JENSEN.

MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

APPLIOATION FILED AUG.4,1908.

Patented June 29, 1909.

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7/ INVENTOfi Ill/(W67 a; Mime 1 I vl' ATTORNEYS B. J. JENSEN.

MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

APPLICATION FILED AUG.4.190G.

926,422. Patented June 29,1909.

6 SHEETS-SHEET 3.

% NVEN O m 244% a'l/w/ymvaz B. J. JENSEN.

MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

APPLICATION FILED AUG.4, 1906.

Patented June 29, 1909.

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B. J. JENSEN.

MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

APPLIUATION FILED AUG. 4, 1906.

Patented June 29, 1909.

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uv YEN- R WITNESSES n45 NORRIS PETERS co., WASHINGTONI-D n B. J. JENSEN.

- MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

APPLICATION FILED AUG. 4,1908.

Patented June 29, 1909.

6 SHEETS-SHEET 6 WITNESSES 1m: NORRIS PsrsRs co., \usumcrou, n. c.

BERNHARDT JOHAN JENSEN, OF COPENHAGEN, DENMARK.

MACHINE FOR MANUFACTURING PAPER BAGS AND THE LIKE.

Specification of Letters Patent.

Patented June 29, 1909.

Application filed August 4, 1906. Serial No. 329,141.

T 0 all whom it may concern:

Be it known that I, BERNHAR'DT JonAN JENSEN, a citizen of the Kingdom ofDenmark, residing in Godthaabsvej l2, Copenhagen, in the Kingdom ofDenmark, cngineer, have invented new and useful Improvements in Machinesfor Manufacturing Paper Bags and the Like, oi which the following is aspecification.

This invention relates to machines for manufacturing paper bags and thelike, and has as its object to generally improve the construction andincrease the capacity of machines of this type.

More specifically the invention aims to rovide a machine in which thesheets or lanks, after having been folded into two parts, are caught bysuitable devices mounted on a continuously moving element and while heldby said devices are formed into complete bags. The machine isparticularly adapted for making bags having a bottom and side fold, anda construction is provided whereby both of these folds are made byimproved mechanism while the sheet is held by the devices justmentioned.

The continuously moving element preferably takes the form of a rotaryshaft upon which are arranged radially a series of relatively stationaryand movable plates between which the sheets are grasped after havingbeen folded into two parts by means of feed-rollers or other suitablemechanism. Means are provided for actuating the movable lates at theproper time for grasping the s eet and there are mounted on the movableplates and on fixed parts of the machine the instrumentalities forcreasing the overlapping side and bottom flaps of the sheet, gluing thesame and finally folding them down in osition. The various devices areoperate( from the rotary shaft alluded to by positive mechanism, and therequisite operations follow each other in such sequence that a bag isformed from each sheet durin a semi-revolution of the shalt, thefinished bag then falling out from bc tween its correspondingretaining-plates. Accordingly in a given time a large num ber of bagscan be manufactured.

The invention is illustrated on the accompanying drawings in which:

Figure 1 is a side-elevation, with certain portions broken away, of myimproved machine for making paper bags and the like,

Fig. 2 is an end-elevation of the drum and the l carrying devices Forthe sheets, Fig. 3 is a detail view of the mechanism for applying glueto the side-flap, Figs. i7 are detail views showing in di'll'erentpositions the mechanism for making the side-llaps of the bags, Fig. 8

an end-view ol the folding-knife, Figs. 9

and 10 are respectively a transverse section and a rear-elevation of thesupporting-plate, Figs. 11 and 12 are respectively a side-elevation anda horizontal section of the mechan ism for folding over the bottom-flap,the section being taken nearly on the line A, B in Fig. 1, looking inthe direction of the arrows, Fig. 13 is a plan-view of the bottomlapmechanism and the clamping-plates, Fig. 1+ shows the blank from whichthe bag is made by the machine, Fig. 15 shows the blank after the first'l'olding operation, and Fig. 16 shows the completed bag.

a is the main shaft of the machine driven by means of a belt-pulley bcarrying a bevelwheel 0 gearing into another bevel-wheel (Z. The latteris firmly connected with a gear wheelf and the movement is by means ofan intermediate gear-wheel g transmitted to a gear-wheel 7c fixed upon ashaft 7b which is thereby made to revolve in the direction indicated bythe arrow m in Fig. 3. The shaft 7L has its bearings in the frame 72 ofthe machine, and is provided with naves p in which are arranged eightradially fixed plates (1, and an equal number of plates r capable ofmoving on pivots s in the naves p, Fig. 2.

The pivots s are arranged in such a manner as to allow the movableplates 1' to be brought into close contact with the fixed plates Theplates 1' carry arms 1 provided with rollers it which latter, during therotation ol the shaft 72 run on a cam-disk 1:, whereby the plates r atproper points approach or withdr w from the plates (1. The plates 1 arepressed against the plates (1 by means of springs 10, Fig. 2.

When one set of plates 9, 1' points upward. the plates are apart andform between them a wedge-shaped space situated just below the rollers11' between which the sheet y, Fig. 13, from which the bag is to be madeis creased the first time along the line 2, the sheet being pressed downbetween the rollers a by means of a croaser-plate Z. The sheet will thenbe folded as shown in Fig. 14 and falls down into the space between theplates q and 1' where it is stopped by an adjustable gage 2. Fig. 3, sothat the strip 3 which is to be bent 111 over the one side oi the bag,ust

extends entirely beyond the edge of the plate q, While the upper edge ofthe other side of the bag is just level with the edge of the plate 9. Assoon as the said set of plates g, 1 has moved a little to the right, theplate 1" is pressed in against the plate Fig. 3, in consequence of theform of the cam-disk at this point, and influenced by the spring w. Thesheet once folded will now be firmly held between the plates q, 1 andonly the parts of which the sideand bottom flaps are to be made willextend beyond the plate A little to the right of the rollers 11:, Fig.1, a rotating shaft 4 is mounted in the frame a, the said shaft carryinga wing 5, Figs. 1 and 3, which during the rotation of the shaft 4 willpass over a glue-roller 6 whereby the glue is transferred to the wing,which then wipes over the strip 3 of the bag extending beyond the edgeof the plate 7 whereby the glue is transferred to the said strip. Theshaft t rotates in the direction illustrated by the arrow 7, and itsvelocity is adjusted so as to allow the wing to come into contact withall the stripsone after anotherprotruding from the plates q; in thepresent case the velocity of rotation is eight times that of the shaft 7The shaft 4 is moved by means of the gear-wheel r gearing into anothergearwheel 3 mounted on the shaft 4. The glueroller 6 is made to revolveby some suitable means and is continually supplied with glue from areceptacle 60, on the frame it, having a bottom-plate 61 which can beadjusted with respect to the roller 6 as the same is gradually worn out,so that the tight contact between the cylindrical surface of the rollerand the bottom of the receptacle is always fully retained. hen the gluehas been transferred to the strip or flap 3 the latter is folded andcreased by means of devices described below.

In the frame it is mounted a revolving shaft 9, Figs. 1 and 1 to 7,carrying a creaserplate 10 and an arm 11 provided with a roller 12, thelatter running on a earn-disk 13. This cam-disk is made to revolve inthe direction indicated by the arrow lat through gearing operated fromthe wheel is, and revolves at the same speed as the shaft 1.

An arm 16 provided with a comb-shaped supporting-plate 15 is looselymounted on the shaft 9 and adjacent to the creaserplate 10, as shown inFig. 8. The arm 16 is influenced by a spring 13, Fig. 9 inserted betweenan abutment in the nave of the arm and a pin 17 in the shaft 9. T hesupporting-plate 15 normally assumes the position shown in Fig. 8 withregard to the creaser-plate 10.

ii hen the cam-disk 13 revolves, the creaser-plate 10 is made tooscillate inasmuch as the roller 12 runs on the said camdisk, and it iskept pressed against the latter by means of a suitable spring. i i henthe plate g assumes the position shown in Fig. 41, the creaser-plate 10hits the strip 3 and creases it; but, immediately before thecreaser-plate hits the strip, the supportingplate 15 influenced by thespring 18 descends on the latter and helps to keep the bag firmly. Thecreascr-plate 1O ascends forthwith While the supporting-plate, stillunder influence of the spring 18, remains for a short while resting onthe strip 3, thus preventing the latter from following the creaser-plate10. As soon as the plate 10 has ascended from the strip 3, a row offingers 19, Fig. 1, arranged on a shaft 20 rotatably mounted in theframe a, are pressed over the strip 3, folding same and simultaneouslypressing it against the other side of the bag. The shaft 20 carries anarm 21 provided with a roller 22 running on a camdisk 24 mounted upon arevolving shaft 23, as shown in Fig. 4. The roller 22 is held againstthe cam-disk by means of suitable springs. The strip 3 is now bent downover the other side of the bag, and this other side of the bag is nowfinished. In order to keep the strip 3 in its place, a rock-shaft with arow of fingers 26 projecting into the intervals between the fingers 19,is mounted along the upper edge of each of the plates 1, the said platesbeing a little shorter than the plates q. T he shaft carries an arm 27,1, provided with a roller 23 running on a stationary cam-disk 29 andheld against same by means of suitable springs. As soon as the roller 28of the plate 1' has reached the point 30 on the camdisk 29, Fig. 3, thefingers 26 are swung down over the strip 3 and keep this fi *mly untilthe bag falls out from the interval between the plates 9 and 1".

As mentioned above the strip 3 extends beyond the edge of the plate q,and therefore when it is hit by the creaser-plate 10 it must have asupport to serve as an impact for the striking of the ereaser-plate.Such a support is shown in Figs. 1, 1 and 5 and consists of a curvedplate 31 with a slit 32.

The plate 31 is attached to an arm 33 capable of turning on a shaft 34:and carrying another arm 35 provided with a roller 36 which runs on andis held against a cam-disk mounted on the same shaft as the cam-disk 24.The plate 31 thus swings up and down, and the parts are adjusted in sucha manner that the slit 32 is level with the plate 9 at the moment whenthe creaser-plate 10 hits the strip 3, while simultaneously the plate 31descends with the same speed the outer edge of the plate (1. The slit 32thus forms a striking-guide for the creaser-plate while the part of theplate 31 above the slit, serves to start the creasing of the strip 3.The said part of the plate 31 is comb-shaped and consequently does notimpede the movement of the fingers 19.

For the making of the bottomdiap of the bag the following mechanism,Figs. 11, 12,

and 13 is used which in all principal features corresponds to the onementioned above and serving for the making of the side-flap.

To the frame a is attached a bracket 37, in which is mounted a shaft 38at a right angle with the shaft 7t. This shaft 38 is provided with aglue-wing 39 revolving in the direction indicated by the arrow 40, Fig.1.1, and serving to smear the glue on the strip 41 of the bag, whichstrip extends beyond the side edge of the plate 9 and has to be bent inorder to form the bottom-flap of the bag. The glue-wing 39 receives theglue from a glueroller 42, and acts in the same manner as the wing 5mentioned above. The glue-roller 42 is journaled in bearings 64 adjacentto a gluereceptacle 63 from which it is supplied in the same manner asthe glue-roller 9. The gluewing 39 being at a right angle with the shafth the glue can be applied along the entire surface of the strip 41.Below the shaft 38, and also at a right angle with the shaft 7t, ismounted a shaft 43 which can be turned to and fro by means of acam-disk. The shaft 43 carries the end ereaser-plate 44 together with asupporting-plate 45 corresponding to the su porting-plate l5 andcomb-shaped like t is one. The supporting-plate 45 meets the plate qshortly before the creaserplate 44 hits the strip 41 and serves to holdthe bag firmly. As soon as the creaserplate 44 has struck it is movedback while the supporting-plate 45 remains and prevents the bag frombending upward. hen the supporting-plate 45 has ascended, the fingers46, corresponding to the fingers 19 men tioned above, issue from theframe a and bend the strip 41 in over the bag, while the fingers 47,corresponding to the fingers 26 mentioned before, immediately thereafterpress down the strip and hold it firmly until the bag falls out of themachine. The fingers 46 are fixed upon a shaft which is at a right anglewith the shaft 71, and they are moved to and fro by means of an armrunning on a revolving cam-disk. The fingers 47 are fixed upon a shaft48 mounted along the side-edge of the plate g and carrying an arm 49,Fig. 1, provided with a roller running on a stationary cam-disk 50arranged at the end of the shaft 7t. A fixed plate 51 serves as astrikingguide for the creaser-plate 44, Figs. 11 and 12, which isprovided with a slit 52 and is comb-shaped so as not to prevent themovement of the lingers 46. he slit 52 is at a right angle with theshaft 7t. The bag being now provided with bottomdlap, is finished, andwhen the plate-set g, r concerned reaches the position in which theplates are pointing vertically downward, the plate 1" will beautomatically moved away from the plate g; the bag is now released so asto fall out of the machine or to be removed from same in some othermanner. The plate 1 remains apart from the plate q, as seen in Fig. 1,while the shaft 7t is turned the other half revolution, and when theplates point vertically upward another folded sheet can fall downbetween them from the rollers The plates 1" and g may also be fixed onto a continuously moving endless band.

Ilaving thus described my invention, I claim as new and desire to secureby Letters Patent:

1. In a bag-making machine, the combination, with a carrying devicecomprising a pair of hinged plates between which the sheet is grasped,of a gage mounted on one of said plates and having a part projectinginto the space between the plates to limit the sheet in its inwardmovement between the plates.

2. In a machine for making paper bags, the combination of pairs ofrelatively movable and fixed plates between which the folded sheet isgrasped, one of said plates extending beyond the other plate of the samepair at one edge, and folding mechanism adjacent said edge.

In a machine for making paper bags, the combination of pairs ofrelatively movable and fixed plates between which the folded sheet isgrasped, one of said plates extending beyond the other plate of the samepair at two edges, and folding mechanism adjacent said edges.

4. The combination, with the rotatably mounted plates between which thesheets are grasped, of means to glue the edge of the sheet which extendsbeyond said plates, means to crease said edge to form a flap, and meansto fold the flap thus formed down on the other edge of the sheet.

5. In a machine for making paper bags, the combination, with devices tocarry the sheets in such a manner that the side and bottom edges thereofproject beyond such devices, of means to crease such edges to form sideand bottom flaps, means to glue such flaps, and means to fold such flapsover on the opposite edges of the sheet.

6. In a machine for making paper bags, the combination of continuouslymoving, relatively fixed and movable plates between which the foldedsheet is grasped, one of said plates being narrower than the other andprovided at the edge beyond which the other plate extends with means tohold down the folded edge of the sheet.

7. In a machine for making paper bags, the combination, with thecontinuously moving, relatively fixed and movable plates between whichthe folded sheet is grasped, one of said plates being narrower than theother, of means at the edge of the narrower plate to hold down thefolded flap of the sheet, means for creasing the sheet at its projectingedge, means for gluing the flap thus formed, means for folding such flapdown on the opposite edge of the sheet, and means for actuating saidholding means to hold the flap down during the further movement of saidplates.

8. in a machine for making paper bags, the combination, with the movableplates hetween which the folded sheet is grasped, of a creaser-platewhich strikes the projecting edge of the sheet and creases the same, andsupporting-plate which holds the sheet against one of said first-namedplates during; the creasing operation.

9. The combination, with the movable plates between which th i l foldedSilGQi) 1S grasped, of a pivoted creaser-plate, mea actuate said plateto crease the sl eet projecting; edge, a pivoted supporting-pl to pressthe sheet against one of said named plates after the creaser-piatestruck the sheet, and means to actuate said supporting-plate.

10. The combination, with the nieans for holding and carrying the foldedsheet, of a pivoted creaser-plate, a pivoted supportingplate, and acommon p'vot for said plates.

11. The combination, with th sheet-ca rying' devices, of creaser-plate10 to crease the sheet at its projecting edge, and plate 31 to supportthe sheet at its projecting edge and which receives the impact of thecreaserplate.

12. The combination, with the devices for u said =arryin;plates, saidsupporting-plate sing provided with a striking -guide, a

ereaser-- late v'hich moves in downward direction and strikes the sheetupon its upper porting-plate which retains the sheet against one of saidcarrying-plates during the creasins operation.

in testimony, that I claim the foregoing my invention, 1 have signed myname presence of two subscribing Witnesses.

BEBNHARDT JUHAN JENSEN.

Witnesses:

iiXEL Pnimm, EnNnsT BOUTARD.

its

